pumicose,a.rare.|ˈpjuːmɪkəʊs| [ad. L. pūmicōs-us (Pliny), like pumice, f.pūmex, -icem: see -ose.] Of the nature or appearance of pumice. 1811Pinkerton Petralogy I. 504 Fragments amorphous, blunt. Weight, pumicose.1845Sir W. Hamilton Metaph. I. App. 435 A pumicose deposit.